<html xmlns:th="http://www.w3.org/1999/xhtml">
    <body>
        <h1>LoginView</h1>
        <form action="/login" method="post" >
            <input id="username" name="username"/>
            <input id="password" name="password"/>
            <button type="submit">提交</button>
        </form>
    </body>
</html>